Brick Calculator

This brick calculator helps you estimate how many bricks to order for a wall, plus mortar bags, pallets, and material budget. Use it as a brick quantity calculator for any wall project, from a single accent wall to a full house exterior.

1. Measure wall length and wall height in feet. Multiply those numbers to verify your gross wall area. Example: a 30 ft by 8 ft wall equals 240 sq ft.
2. Measure windows and doors that interrupt the wall, then add their areas and enter that value in the openings field. A 3 by 5 ft window is 15 sq ft, and a 3 by 7 ft door is 21 sq ft.
3. Enter brick dimensions. For common US modular face brick, use 7.625 in length, 2.25 in height, and 3.625 in width. Keep these values tied to the actual product submittal sheet from your supplier.
4. Set mortar joint thickness. Use 3/8 in for most running bond work. If your mason is planning 1/2 in joints for a specific profile, enter 0.5 so your brick count and course count stay realistic.
5. Set waste factor. Use 5% for simple straight walls, 10% for walls with returns and many cuts, and 12% when you need color sorting across many pallets.
6. Click "Calculate bricks" to get total brick quantity, coverage rate, pallets to order, mortar volume, mortar bags, and a 2026 material cost range.

Pro tip: Confirm pallet quantity before final purchase. Many suppliers sell "about 500" bricks per pallet, but project-specific products can ship closer to 400 or 534. That single detail changes trucking, forklift time, and staging space on site.

Assumptions and limitations

This brick estimator assumes a single-wythe wall in running bond pattern. Results may vary for double-wythe walls, soldier courses, stacked bond, or herringbone patterns. The mortar estimate uses volumetric difference between module and brick solids, which tracks well for standard joints but can overestimate on thick-bed applications. Always confirm final quantities with your mason or supplier before placing the order.

Common US brick sizes and coverage

Coverage shifts with brick profile and joint thickness. Use this table for quick brickwork calculation before entering custom values. All numbers below assume 3/8 inch mortar joints and running bond pattern.

This brick calculator uses face-module geometry to estimate brick quantity from wall area, then converts that result into pallet count and mortar volume. The same core method is used in many professional takeoff worksheets because it handles custom brick dimensions and custom joint thickness without hardcoded presets.

The "module" is the brick face plus one mortar joint in each direction. Think of it as the actual installed size of each brick: Module = Brick size + Mortar joint. Dividing 144 square inches (1 sq ft) by the module area gives how many bricks fit per square foot. Multiply by net wall area and apply waste to get your order quantity.

Example: 30 ft wall with openings

A 30 ft by 8 ft wall with one 3 × 5 ft window and one 3 × 7 ft door, using modular brick at 3/8 in joints:

Given:

• Wall = 30 ft × 8 ft
• Window = 15 sq ft, Door = 21 sq ft
• Modular brick = 7.625 × 2.25 in, Mortar joint = 3/8 in
• Waste = 10%

Calculations:

• Wall area = 30 × 8 = 240 sq ft
• Net wall area = 240 − (15 + 21) = 204 sq ft
• Module = 8.0 × 2.625 in → Bricks per sq ft = 144 / 21 = 6.9

For a breakdown of how brick dimensions and mortar joints change coverage rates, see our guide to brick sizes and bricks per square foot.

For the full step-by-step calculation with a worked garden wall example, see our guide on how to calculate bricks for a wall.

Mortar volume and bag estimate

We calculate the empty space between bricks (the mortar joint gap) and convert it into mortar volume. This approach tracks size changes better than a flat "bags per 1,000 bricks" rule.

  Module volume (cu in) = Module length × Module height × Module width
Brick volume (cu in) = Brick length × Brick height × Brick width
Mortar (cu ft) = Total bricks × (Module volume − Brick volume) / 1,728
Mortar bags (80 lb) = ⌈Mortar (cu ft) / 0.70⌉

Mortar yield quick guide

Bag yield varies by mix brand, water content, and joint style. Most homeowners and contractors choose 80 lb bags for wall projects. Use this table as a planning guide before final supplier confirmation.

Brick calculator for house exterior

A typical 1,500 sq ft ranch house has roughly 1,200 sq ft of exterior wall area after subtracting windows and doors. At 6.9 modular bricks per sq ft with 10% waste, that comes to about 9,100 bricks or roughly 19 pallets. Material cost runs $6,500 to $12,000 for brick and mortar in 2026. Larger homes with more wall area can use this brick calculator for house estimates by adding each wall section separately.

Common brick calculator mistakes

Forgetting openings is the most common error. Even two windows and one door can remove 40 to 60 square feet from a wall, which changes the order by 250 to 400 bricks. Measure openings before you place material orders.

The second mistake is mixing nominal and actual dimensions. Product sheets list both. If you enter nominal sizes as actual sizes, the brick calculator can undercount by several percent on long walls.

The third mistake is skipping waste. A 10% buffer sounds high until your crew cuts corners, returns, and starter pieces. Running short near the end of a wall usually costs more than carrying a few extra cubes of brick.

Material cost assumptions (2026)

This brick calculator uses $0.65 to $1.20 per brick and $8 to $15 per 80 lb mortar bag for material-only planning in 2026. Premium handmade brick, imported brick, and specialty mortar colors can push costs higher, so confirm local supplier quotes before final budgeting.